CN102248044B - Method for bending rear crossbeam of heavy truck and bending die - Google Patents
Method for bending rear crossbeam of heavy truck and bending die Download PDFInfo
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- CN102248044B CN102248044B CN201110148171.5A CN201110148171A CN102248044B CN 102248044 B CN102248044 B CN 102248044B CN 201110148171 A CN201110148171 A CN 201110148171A CN 102248044 B CN102248044 B CN 102248044B
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- bending mould
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- die
- cross beam
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Abstract
本发明涉及一种重卡后横梁的弯曲方法，将调试合格的弯曲模具装在压力机上；将落冲的毛坯件上的两定位孔穿入顶件器上表面上的两定位销中，放置在弯曲模具下模的顶件器上；按下压力机工作按钮，弯曲模具的凸模随压力机滑块下行，弯曲力以垂直于水平面的方向作用于毛坯件，与弯曲模具的顶件器一起压紧毛坯件下行进入弯曲模具的凹模的型腔内，压力机滑块下行至弯曲模具的凹模底部，毛坯件在弯曲模具的凹模中成形，压力机滑块上行，弯曲模具的顶件器、弯曲成型件和弯曲模具的凸模同时上行至弯曲前位置，弯曲模具的凸模与弯曲成型件分离，由于钢板回弹，使后横梁的翼面与底面成达到理想状态。同时本发明还公开与该方法配合使用的弯曲模具。
The invention relates to a bending method for the rear beam of a heavy truck. A bending mold qualified for debugging is installed on a press; On the ejector of the lower mold of the bending mold; press the press button, the punch of the bending mold will go down with the slider of the press, and the bending force will act on the blank in a direction perpendicular to the horizontal plane, together with the ejector of the bending mold The pressed blank goes down into the cavity of the concave mold of the bending mold, the slider of the press goes down to the bottom of the concave mold of the bending mold, the blank is formed in the concave mold of the bending mold, the slider of the press goes up, and the top of the bending mold The parts, bending forming parts and the punch of the bending mold go up to the position before bending at the same time, and the punch of the bending mold is separated from the bending forming part. Due to the rebound of the steel plate, the wing surface and the bottom surface of the rear beam are in an ideal state. At the same time, the invention also discloses a bending mold used in conjunction with the method.
Description
Technical field
The present invention relates to a kind of vehicle part processing method and mould, especially a kind of bending method of heavy card rear cross beam and bending mould.
Background technology
It is 90 ° that the rear cross beam of heavy hauler requires an aerofoil and bottom surface angle, another aerofoil and bottom surface angle a are greater than the irregular U-shaped part of 90 °, two aerofoil height are greater than 250mm, its material adopts high-intensity frame beam steel plate, expect thick 6 to 10mm, conventionally bend mode is: curved hairs blank lies in a horizontal plane on the ejector of bending mould, and when crooked, bending force is vertical with the bottom surface of crossbeam.Because rear cross beam is irregular U-shaped part, two aerofoils are stressed asymmetric, cause two aerofoil resiliences to vary in size, die debugging difficulty, and resilience is difficult to control and is serious, thereby affects assembling beat and the complete vehicle quality of vehicle frame.
Summary of the invention
The object of the invention is for overcoming above-mentioned the deficiencies in the prior art, a kind of simple structure is provided, and debugging is convenient, can be the stressed symmetry of two aerofoils of processed rear cross beam, resilience reduces and is easy to control, improves the bending method that heavily blocks rear cross beam and the bending mould of complete vehicle quality.
For achieving the above object, the present invention adopts following technical proposals:
A bending method for heavy card rear cross beam, comprises the following steps:
1). the qualified bending mould of debugging is contained on forcing press;
2). two locating holes on the blank of the punching that falls are penetrated in two alignment pins on ejector upper surface, be placed on the ejector of bending mould counterdie; Described blank becomes b degree angle to be placed on the ejector of bending mould with horizontal plane, b=(a-90 °)/2 wherein, and a is rear cross beam is greater than the angle of 90 ° between an aerofoil and bottom surface;
3). press forcing press play button, the punch of bending mould is descending with press ram, bending force with the directive effect perpendicular to horizontal plane in blank, compress in the die cavity of the die that is advanced into bending mould under blank with together with the ejector of bending mould, press ram comes downwards to the die bottom of bending mould, blank is shaped in the die of bending mould, and the angle of two aerofoils and bottom surface is slightly less than product requirement angle;
4). subsequently, press ram is up, and the punch of the ejector of bending mould, brake forming part and bending mould goes upward to crooked front position simultaneously, and the punch of bending mould is separated with brake forming part, press ram goes upward to the top dead-centre of forcing press, out of service; Due to steel plate resilience, make the aerofoil of rear cross beam become to reach perfect condition with bottom surface.
A kind of bending mould of heavy card rear cross beam, comprise the upper die and lower die that match, patrix bottom is provided with the punch matching with rear cross beam to be processed, in counterdie, be provided with the die corresponding with punch and run through up and down the ejector of die, ejector lower end is connected with push rod, the upper surface of described ejector is for becoming the inclined plane of b degree angle with horizontal plane, b=(a-90 °)/2 wherein, and a is rear cross beam is greater than the angle of 90 ° between an aerofoil and bottom surface.
The upper surface of described ejector is provided with two alignment pins that upwards arrange.
Compared with prior art, the present invention is by changing the placement direction of curved hairs blank, curved hairs blank is become b angle be placed on the ejector of mould (wherein b=(a-90 °)/2) with horizontal plane, bending force with the directive effect perpendicular to horizontal plane on blank, after being shaped, two aerofoils and horizontal plane angle are complementary, and stressed symmetry reduces die debugging difficulty, make resilience minimizing and easy to control, improve complete vehicle quality.
Accompanying drawing explanation
Work schematic diagram when Fig. 1 is rear cross beam bending of the present invention;
Fig. 2 is rear cross beam bending die sketch of the present invention;
Wherein: 1, blank, 2, brake forming part, 3, locating hole, 4, bending direction, 5, ejector, 6, alignment pin, 7, die, 8, patrix, 9, counterdie, 10. push rod, 11. punch.
The specific embodiment
Below in conjunction with drawings and Examples, the present invention is further described.
As shown in Figure 1 and Figure 2, a kind of bending method of heavy card rear cross beam, comprises the following steps:
1). the qualified bending mould of debugging is contained on forcing press;
2). two locating holes 3 on the blank 1 of the punching that falls are penetrated to two alignment pins 6 that arrange on ejector 5 upper surfaces, be placed on the ejector 5 of bending mould counterdie 9; Described blank 1 becomes b degree angle to be placed on the ejector 5 of bending mould with horizontal plane, b=(a-90 °)/2 wherein, and a is rear cross beam is greater than the angle of 90 ° between an aerofoil and bottom surface;
4). press forcing press play button, the punch 11 of bending mould is descending with press ram, bending force with the directive effect perpendicular to horizontal plane in blank 1, with together with the ejector 5 of bending mould, compress blank and be advanced into for 1 time in the die cavity of die 7 of bending mould, press ram comes downwards to die 7 bottoms of bending mould, blank 1 is shaped in the die 7 of bending mould, and the angle of two aerofoils and bottom surface is slightly less than product requirement angle;
5). subsequently, press ram is up, and the punch 11 of the ejector 5 of bending mould, brake forming part 2 and bending mould goes upward to crooked front position simultaneously, and the punch 11 of bending mould is separated with brake forming part 2, press ram goes upward to the top dead-centre of forcing press, out of service; Due to steel plate resilience, make the aerofoil of rear cross beam become to reach perfect condition with bottom surface.
A kind of bending mould of heavy card rear cross beam, comprise the patrix 8 and the counterdie 9 that match, patrix 8 bottoms are provided with the punch 11 matching with rear cross beam to be processed, in counterdie 8, be provided with the die corresponding with punch 11 7 and run through up and down the ejector 5 of die 7, ejector 5 lower ends are connected with push rod 10, the upper surface of described ejector 5 is for becoming the inclined plane of b degree angle with horizontal plane, b=(a-90 °)/2 wherein, and a is rear cross beam is greater than the angle of 90 ° between an aerofoil and bottom surface.The upper surface of described ejector 5 is provided with two alignment pins 6 that upwards arrange.
The present invention is by changing the placement direction of curved hairs blank 1, curved hairs blank 1 is become b angle be placed on the ejector 5 of bending mould (wherein b=(a-90 °)/2) with horizontal plane, bending force with the directive effect perpendicular to horizontal plane on blank 1, after being shaped, two aerofoils and horizontal plane angle are complementary, stressed symmetry, reduce die debugging difficulty, make resilience minimizing and easy to control, improve complete vehicle quality.
Claims (3)
1. heavily block a bending method for rear cross beam, it is characterized in that, comprise the following steps:
1). the qualified bending mould of debugging is contained on forcing press;
2). two locating holes on the blank of the punching that falls are penetrated in two alignment pins that arrange on ejector upper surface, be placed on the ejector of bending mould counterdie; Described blank becomes b degree angle to be placed on the ejector of bending mould with horizontal plane, b=(a-90 °)/2 wherein, and a is rear cross beam is greater than the angle of 90 ° between an aerofoil and bottom surface;
3). press forcing press play button, the punch of bending mould is descending with press ram, bending force with the directive effect perpendicular to horizontal plane in blank, compress in the die cavity of the die that is advanced into bending mould under blank with together with the ejector of bending mould, press ram comes downwards to the die bottom of bending mould, blank is shaped in the die of bending mould, and the angle of two aerofoils and bottom surface is slightly less than product requirement angle;
4). subsequently, press ram is up, and the punch of the ejector of bending mould, brake forming part and bending mould goes upward to crooked front position simultaneously, and the punch of bending mould is separated with brake forming part, press ram goes upward to the top dead-centre of forcing press, out of service; Due to steel plate resilience, make the aerofoil of rear cross beam become to reach perfect condition with bottom surface.
2. a bending mould that heavily blocks rear cross beam, it is characterized in that, comprise the upper die and lower die that match, patrix bottom is provided with the punch matching with rear cross beam to be processed, in counterdie, be provided with the die corresponding with punch and run through up and down the ejector of die, ejector lower end is connected with push rod, and the upper surface of described ejector is for becoming the inclined plane of b degree angle with horizontal plane, b=(a-90 °)/2 wherein, a is rear cross beam is greater than the angle of 90 ° between an aerofoil and bottom surface.
3. the bending mould of heavy card rear cross beam as claimed in claim 2, is characterized in that: the upper surface of described ejector is provided with two alignment pins that upwards arrange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110148171.5A CN102248044B (en) | 2011-06-03 | 2011-06-03 | Method for bending rear crossbeam of heavy truck and bending die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110148171.5A CN102248044B (en) | 2011-06-03 | 2011-06-03 | Method for bending rear crossbeam of heavy truck and bending die |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102248044A CN102248044A (en) | 2011-11-23 |
| CN102248044B true CN102248044B (en) | 2014-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110148171.5A Active CN102248044B (en) | 2011-06-03 | 2011-06-03 | Method for bending rear crossbeam of heavy truck and bending die |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102861822A (en) * | 2012-09-27 | 2013-01-09 | 六安市恒兴工贸有限责任公司 | Die set |
| CN105598277A (en) * | 2015-12-25 | 2016-05-25 | 四川航天世东汽车部件有限公司 | Transmission assisting support bending die |
| CN106825280A (en) * | 2016-12-23 | 2017-06-13 | 山东潍坊福田模具有限责任公司 | A kind of mould, process equipment and processing method |
| CN109047492A (en) * | 2018-08-03 | 2018-12-21 | 芜湖勤惠科技有限公司 | A kind of composite die of punching press bracket of back axle |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4163380A (en) * | 1977-10-11 | 1979-08-07 | Lockheed Corporation | Forming of preconsolidated metal matrix composites |
| JP2004009129A (en) * | 2002-06-11 | 2004-01-15 | Toyota Motor Corp | Mold for overbend molding and method for determining die shape |
| JP2004195535A (en) * | 2002-12-20 | 2004-07-15 | Press Kogyo Co Ltd | Twist preventing method and angle forming method for bent article, and press used therefor |
| JP2007111725A (en) * | 2005-10-19 | 2007-05-10 | Nippon Steel Corp | Press molding method and press mold excellent in shape freezing property |
| CN201618800U (en) * | 2010-01-27 | 2010-11-03 | 湖南铁道职业技术学院 | U-shaped self-bearing weight mould with adjustable bending springback angle |
| CN201644640U (en) * | 2010-03-18 | 2010-11-24 | 苏州凯贸铸造工业有限公司 | Swinging block die |
| CN202105919U (en) * | 2011-06-03 | 2012-01-11 | 中国重汽集团济南动力有限公司 | Bending mould of rear cross beam of heavy truck |
-
2011
- 2011-06-03 CN CN201110148171.5A patent/CN102248044B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4163380A (en) * | 1977-10-11 | 1979-08-07 | Lockheed Corporation | Forming of preconsolidated metal matrix composites |
| JP2004009129A (en) * | 2002-06-11 | 2004-01-15 | Toyota Motor Corp | Mold for overbend molding and method for determining die shape |
| JP2004195535A (en) * | 2002-12-20 | 2004-07-15 | Press Kogyo Co Ltd | Twist preventing method and angle forming method for bent article, and press used therefor |
| JP2007111725A (en) * | 2005-10-19 | 2007-05-10 | Nippon Steel Corp | Press molding method and press mold excellent in shape freezing property |
| CN201618800U (en) * | 2010-01-27 | 2010-11-03 | 湖南铁道职业技术学院 | U-shaped self-bearing weight mould with adjustable bending springback angle |
| CN201644640U (en) * | 2010-03-18 | 2010-11-24 | 苏州凯贸铸造工业有限公司 | Swinging block die |
| CN202105919U (en) * | 2011-06-03 | 2012-01-11 | 中国重汽集团济南动力有限公司 | Bending mould of rear cross beam of heavy truck |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102248044A (en) | 2011-11-23 |
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